It’s been lovely if not a little wet on the Bison Live Cams, and it will continue to be rainy and chilly in Grasslands National Park this weekend. The bison, with their thick coats, do not seem to mind. The prairie dogs however, build to prepare. Prairie dogs are excellent engineers. Their burrows and tunnel systems are intricate and provide protection against predators. The sentinels stand on mounds at the top of the entrances to elevate the small rodents, who keep a watchful eye on potential threats to their towns. Those mounds are also good for keeping out rain. They act as a small, but efficient dam, ensuring that heavy rains won’t flood the babies and homes underground.